Powder discharge groove machining tool

Abstract

The powder discharging groove machining tool comprises a chuck arranged on the outer side of a mounting rod of a drill bit in a sleeving mode, and a clamping jaw set is arranged at the front end of the chuck and used for clamping an impact part of the drill bit; the guide sleeve is arranged on the outer side of the mounting rod in a sleeving mode and fixedly connected with the chuck, indexing holes are formed in the outer circumferential surface of the guide sleeve at intervals, and the indexing holes are used for being arranged in one-to-one correspondence with powder discharging grooves; the fixed sleeve is rotatably arranged on the outer side of the guide sleeve in a sleeving manner; and the positioning assembly is arranged in the fixing sleeve and is used for being matched with the indexing hole for use, so that the guide sleeve and the fixing sleeve are fixed. Compared with the prior art, the powder discharging groove machining tool is used for being matched with a common milling machine to machine the powder discharging groove of a drill bit, and the product machining efficiency and quality are improved.

Description

Technical Field

[0001] The present application relates to the technical field of drill bit processing, and more specifically, to a powder discharge groove processing tool. Background Art

[0002] The drill bit is equipped with several flutes, which are primarily used to remove rock debris from the hole during drilling. These flutes are located around the impact end of the drill bit and are spaced at intervals around the drill bit. Each flute on the drill bit may have a different angle. Inaccurate indexing or over-calculation can easily render the drill bit useless.

[0003] At present, ordinary milling machines are often used to process powder discharge troughs. Ordinary milling machines use a dial to divide the angle, which is prone to errors in the calculation and operation process, inconvenient to use, low efficiency and low precision. If CNC milling is used for all processing, the processing cost and equipment cost will be high.

[0004] Therefore, there is an urgent need for a powder discharge groove processing tooling that can be used in conjunction with an ordinary milling machine to process the powder discharge groove of the drill bit, thereby improving product processing efficiency and quality. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides a powder discharge groove processing tool, which is used to cooperate with an ordinary milling machine to process the powder discharge groove of a drill bit, thereby improving product processing efficiency and quality.

[0006] The technical solutions provided in this application are as follows:

[0007] A powder discharge trough processing tool, comprising:

[0008] A chuck is mounted on the outside of the drill bit's mounting rod, and a jaw assembly is provided at the front end of the chuck for clamping the impact portion of the drill bit;

[0009] A guide sleeve is sleeved on the outside of the mounting rod and fixedly connected to the chuck, wherein the outer circumferential surface of the guide sleeve is provided with indexing holes at intervals, and the indexing holes are used to be arranged in a one-to-one correspondence with the powder discharge grooves;

[0010] A fixed sleeve is sleeved on the outside of the guide sleeve and is rotatably connected to the guide sleeve;

[0011] A positioning assembly is arranged in the fixing sleeve, and the positioning assembly is used to cooperate with the indexing hole to fix the guide sleeve and the fixing sleeve.

[0012] Preferably, the positioning component includes:

[0013] a mounting hole provided on the fixing sleeve, wherein the mounting hole extends in a radial direction of the fixing sleeve;

[0014] A spring sleeve sleeved in the mounting hole and fixedly connected to the fixing sleeve;

[0015] A positioning rod is sleeved in the spring sleeve, wherein a positioning head is provided at the bottom of the positioning rod, and the surface of the positioning head that cooperates with the indexing hole is specifically an arc surface;

[0016] An elastic member extends along the axial direction of the mounting hole, and two ends of the elastic member are respectively connected to the spring sleeve and the positioning rod.

[0017] Preferably, the outer circumferential surface of the guide sleeve is a conical structure, and the outer diameter of the guide sleeve gradually decreases in the direction from the chuck to the guide sleeve, and the inner diameter of the fixed sleeve and the guide sleeve gradually decreases.

[0018] Preferably, the positioning component further includes:

[0019] an oil groove provided between the mating surfaces of the fixed sleeve and the guide sleeve;

[0020] An oil inlet passage is provided on the fixing sleeve and is used to communicate with the oil groove. An oil inlet is provided on the outer surface of the fixing sleeve, and the oil inlet is communicated with the oil inlet passage.

[0021] Preferably, it also includes:

[0022] an end cap fixedly connected to the guide sleeve;

[0023] A tip is provided on the end cover, and the outer surface of the front end of the tip is fitted with the inner surface of the central air passage of the mounting rod to position the drill bit in the axial direction.

[0024] Preferably, it also includes:

[0025] A connecting piece is provided at one end of the fixed sleeve away from the chuck, the connecting piece is sleeved on the outside of the guide sleeve, and the connecting piece is fixedly connected to the guide sleeve;

[0026] A force-adding rod is arranged on the outside of the connecting piece and connected to the connecting piece.

[0027] Preferably, the guide sleeve comprises:

[0028] A first section, a second section and a third section are connected in sequence along the direction from the chuck to the end cover, wherein the first section is fixedly connected to the chuck, the second section is used in conjunction with the fixing sleeve, and the third section is used in conjunction with the connecting piece.

[0029] Preferably, the connecting member is connected to the third section via a threaded connection, a threaded hole is provided along the radial direction of the connecting member, and an external thread line for use with the threaded hole is provided on the outer surface of the force rod.

[0030] Preferably, the end cap is arranged on a side of the connecting member away from the fixing sleeve, and the end cap is fixedly connected to the guide sleeve;

[0031] A threaded mounting hole is provided in the end cap, the tip passes through the threaded mounting hole, and the front end of the tip is provided with a conical positioning surface for cooperating with the central air channel of the mounting rod;

[0032] An adjusting nut is arranged on a side of the end cover away from the connecting piece, and the adjusting nut is threadedly connected to the top.

[0033] Preferably, it also includes:

[0034] A base is arranged below the fixing sleeve and fixedly connected to the fixing sleeve.

[0035] The present invention provides a powder discharge groove processing tooling, first of all, due to the provision of a chuck and a jaw group, wherein the chuck is mounted on the outside of the mounting rod of the drill bit, and a jaw group is provided at the front end of the chuck, the jaw group is used to clamp the outer circumferential surface of the impact part of the drill bit, and the impact part is fixed by the jaw group, so that the milling machine can process the powder discharge groove on the impact part. Since there are multiple powder discharge grooves on the impact part, the angle of each powder discharge groove on the drill bit may be different. In order to facilitate the positioning of the powder discharge groove, the powder discharge groove processing tooling in the embodiment of the present invention also includes a guide sleeve, a graduation hole, a fixed sleeve and a positioning assembly, the guide sleeve is arranged at the rear end of the chuck away from the claw group, the guide sleeve is arranged on the outside of the mounting rod, and the guide sleeve is fixedly connected to the chuck, and graduation holes are arranged at intervals on the outer circumferential surface of the guide sleeve, the graduation holes are used to correspond to the powder discharge grooves one by one, the fixed sleeve can be rotatably mounted on the outside of the guide sleeve, and a positioning assembly is provided in the fixed sleeve, and the positioning assembly is used to cooperate with the graduation hole to fix the guide sleeve and the fixed sleeve. When the powder discharge groove needs to be processed, the impact part of the drill bit is first fixed by the chuck and the jaw group, and the guide sleeve is rotated. The chuck, the jaw group and the drill bit rotate together. When the guide sleeve is rotated to the indexing hole and the positioning assembly, the fixed sleeve and the guide sleeve are relatively fixed. At this time, the powder discharge groove is processed by the milling machine. When the powder discharge groove here is processed, the guide sleeve is continued to be rotated until the indexing hole at the next place is matched with the positioning assembly. The indexing of the drill bit is achieved through the indexing hole and the positioning assembly, which is more convenient for processing the powder discharge groove and more efficient. It can be seen that compared with the prior art, the powder discharge groove processing tooling in the embodiment of the utility model is used to cooperate with the ordinary milling machine to process the powder discharge groove of the drill bit, thereby improving the processing efficiency and quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0037] Figure 1 It is a structural schematic diagram of a drill bit in the prior art;

[0038] Figure 2 A schematic diagram of the structure of a powder discharge trough processing tooling provided in an embodiment of the utility model;

[0039] Figure 3 for Figure 2 A partial enlarged view of

[0040] Figure 4 A structural schematic diagram of a guide sleeve provided in an embodiment of the utility model.

[0041] Figure numerals: 1. drill bit; 2. chuck; 21. jaw group; 3. guide sleeve; 4. fixing sleeve; 5. positioning assembly; 51. spring sleeve; 52. positioning rod; 53. elastic member; 54. oil groove; 55. oil inlet channel; 56. sealing member; 61. end cover; 62. center; 63. adjusting nut; 71. connecting member; 72. force rod; 8. base; 9. air avoidance groove; 11. impact part; 12. mounting rod; 13. powder discharge groove; 31. dividing hole; 32. first section; 33. second section; 34. third section. DETAILED DESCRIPTION

[0042] In order to help those skilled in the art better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0043] It should be noted that when an element is referred to as being “fixed on” or “set on” another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0044] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0046] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0047] The embodiments of the present invention are written in a progressive manner.

[0048] like Figures 2 to 4 As shown, an embodiment of the utility model provides a powder discharge groove processing tooling, including: a chuck 2 sleeved on the outside of the mounting rod 12 of the drill bit 1, the front end of the chuck 2 is provided with a claw group 21, the claw group 21 is used to clamp the impact part 11 of the drill bit 1; a guide sleeve 3 sleeved on the outside of the mounting rod 12 and fixedly connected to the chuck 2, the outer circumferential surface of the guide sleeve 3 is spaced apart with indexing holes 31, the indexing holes 31 are used to be arranged one-to-one with the powder discharge grooves 13; a fixed sleeve 4 sleeved on the outside of the guide sleeve 3 and rotatably connected to the guide sleeve 3; a positioning component 5 is arranged in the fixed sleeve 4, the positioning component 5 is used to cooperate with the indexing hole 31 to fix the guide sleeve 3 and the fixed sleeve 4.

[0049] like Figure 1As shown, the drill bit 1 includes a mounting rod 12 and an impact part 11. The mounting rod 12 is used for installation, and the impact part 11 is used to impact rock to form a hole. The outer diameter of the impact part 11 is larger than the outer diameter of the mounting rod 12. In addition, a powder discharge groove 13 is provided on the impact part 11. The powder discharge groove 13 is used to discharge rock debris generated during the impact process. However, the angle of each powder discharge groove 13 on the drill bit 1 may be different. If the division is inaccurate or the calculation is superimposed, it is easy to cause the drill bit 1 to be scrapped.

[0050] At present, ordinary milling machines are often used to process the powder discharge trough 13. Ordinary milling machines use a dial to divide the angle, which is prone to errors in the calculation and operation process, is inconvenient to use, has low efficiency and low precision. If CNC milling is used for all processing, the processing cost and equipment cost will be high.

[0051] The powder discharge groove processing tooling provided by the utility model is first provided with a chuck 2 and a jaw group 21, wherein the chuck 2 is mounted on the outside of the mounting rod 12 of the drill bit 1, and the jaw group 21 is provided at the front end of the chuck 2. The jaw group 21 is used to clamp the outer circumferential surface of the impact part 11 of the drill bit 1. The impact part 11 is fixed by the jaw group 21, which facilitates the milling machine to process the powder discharge groove 13 on the impact part 11. Since there are multiple powder discharge grooves 13 on the impact part 11, the angles of each powder discharge groove 13 on the drill bit 1 may be different. In order to facilitate the positioning of the powder discharge groove 13, the powder discharge groove processing tooling in the embodiment of the utility model also includes a guide sleeve 3, a dividing hole 31, a fixed sleeve 4 and a positioning component 5. The guide sleeve 3 is arranged at the rear end of the chuck 2 away from the claw group 21, the guide sleeve 3 is sleeved on the outside of the mounting rod 12, and the guide sleeve 3 is fixedly connected to the chuck 2. Dividing holes 31 are arranged at intervals on the outer circumferential surface of the guide sleeve 3. The dividing holes 31 are used to correspond one to one with the powder discharge grooves 13. The fixed sleeve 4 can be rotatably sleeved on the outside of the guide sleeve 3. A positioning component 5 is provided in the fixed sleeve 4. The positioning component 5 is used to cooperate with the dividing hole 31 to fix the guide sleeve 3 and the fixed sleeve 4. When the powder discharge groove 13 needs to be processed, first fix the impact part 11 of the drill bit 1 through the chuck 2 and the jaw group 21, rotate the guide sleeve 3, and the chuck 2, the jaw group 21 and the drill bit 1 rotate together. When the guide sleeve 3 rotates to the indexing hole 31 and cooperates with the positioning component 5, the fixed sleeve 4 and the guide sleeve 3 are relatively fixed. At this time, the powder discharge groove 13 is processed by the milling machine. When the powder discharge groove 13 here is processed, continue to rotate the guide sleeve 3 until the next indexing hole 31 cooperates with the positioning component 5. The drill bit 1 is indexed by the indexing hole 31 and the positioning component 5, which is more convenient for processing the powder discharge groove 13 and more efficient. It can be seen that compared with the prior art, the powder discharge groove 13 processing tool in the embodiment of the utility model is used to cooperate with the ordinary milling machine to process the powder discharge groove 13 of the drill bit 1, thereby improving the product processing efficiency and quality.

[0052] In the above structure, as one implementation mode, the indexing hole 31 in the embodiment of the present invention extends along the radial direction of the guide sleeve 3 .

[0053] In the above structure, the guide sleeve 3 and the fixed sleeve 4 in the embodiment of the present invention are specifically clearance-fitted, and the guide sleeve 3 and the fixed sleeve 4 can rotate relative to each other so that different indexing holes 31 cooperate with the positioning assembly 5 .

[0054] More specifically, the chuck 2 and the guide sleeve 3 in the embodiment of the present invention are fixedly connected by screws.

[0055] It should be noted that the clamping jaw group in the embodiment of the present invention is used to hold the outer circumferential surface of the impact part, that is, the clamping jaw group is used to clamp the shoulder of the impact part to stabilize the impact part.

[0056] In the above structure, as one of the embodiments, the positioning assembly 5 in the embodiment of the utility model includes a mounting hole, a spring sleeve 51, a positioning rod 52 and an elastic member 53, wherein the mounting hole is provided on the fixed sleeve 4, and the mounting hole extends radially along the fixed sleeve 4. The spring sleeve 51 is sleeved in the mounting hole, and the spring sleeve 51 is fixedly connected to the fixed sleeve 4. The positioning rod 52 is sleeved in the spring sleeve 51, and a positioning head is provided at the bottom of the positioning rod 52. The surface of the positioning head cooperating with the indexing hole 31 is specifically an arc surface. The elastic member 53 is provided in the mounting hole, and the elastic member 53 extends along the axial direction of the mounting hole. The two ends of the elastic member 53 are respectively connected to the spring sleeve 51 and the positioning rod 52.

[0057] Specifically, when the guide sleeve 3 and the fixed sleeve 4 rotate relative to each other, the positioning head contacts the outer surface of the guide sleeve 3, and the elastic member 53 is in a compressed state. When the guide sleeve 3 rotates until the positioning head is relative to the indexing hole 31, the elastic member 53 produces elastic reset deformation, pushing the positioning head into the indexing hole 31, thereby realizing relative fixation between the guide sleeve 3 and the fixed sleeve 4. Furthermore, when the powder discharge groove at this location is processed, it is necessary to continue to rotate the guide sleeve 3 so that the next indexing hole 31 is fixed to the positioning head. Since the surface of the positioning head and the indexing hole 31 is specifically an arc surface, the torque on the guide sleeve 3 is increased, so that the guide sleeve 3 and the fixed sleeve 4 produce relative rotation.

[0058] Furthermore, in the embodiment of the present invention, the surface of the positioning head that cooperates with the indexing hole 31 is specifically a spherical surface.

[0059] Furthermore, the elastic member 53 in the embodiment of the present invention is specifically a spring.

[0060] In the above structure, to prevent axial movement of the guide sleeve 3 along the fixed sleeve 4, as one embodiment, the outer circumferential surface of the guide sleeve 3 in the embodiment of the present invention is specifically a conical structure. The outer diameter of the guide sleeve 3 gradually decreases from the chuck 2 to the end cap 61, and the inner diameter of the fixed sleeve 4 gradually decreases. The fixed sleeve 4 is mounted on the outside of the guide sleeve 3, and the outer surface of the guide sleeve 3 and the inner surface of the fixed sleeve 4 are matched to prevent axial movement between the guide sleeve 3 and the fixed sleeve 4 when machining the powder discharge groove.

[0061] In the above structure, as one of the embodiments, the positioning assembly 5 in the embodiment of the utility model includes an oil groove 54 and an oil inlet channel 55, wherein the oil groove 54 is arranged between the mating surfaces of the fixed sleeve 4 and the guide sleeve 3, and an oil inlet channel 55 is arranged in the fixed sleeve 4, and the oil inlet channel 55 is used to communicate with the oil groove 54. The outer surface of the fixed sleeve 4 is provided with an oil inlet, and the oil inlet is used to communicate with the oil inlet channel 55. Lubricating oil is injected into the oil inlet channel 55 through the oil inlet, and the lubricating oil enters the oil groove 54 from the oil inlet channel 55 to lubricate the mating surfaces of the fixed sleeve 4 and the guide sleeve 3, thereby avoiding jamming between the guide sleeve 3 and the fixed sleeve 4.

[0062] Furthermore, the oil groove 54 in the embodiment of the present invention is recessed from the outer surface of the guide sleeve 3 toward the axial direction.

[0063] Furthermore, as one implementation mode, at least two oil inlet channels 55 are provided in the embodiment of the present invention, and are spaced apart along the length direction of the oil groove 54 .

[0064] In the embodiment of the present invention, two oil inlet channels 55 are provided, and are respectively communicated with both ends of the oil groove 54 .

[0065] Furthermore, the oil-passing groove in the embodiment of the present invention includes a first annular groove, a second annular groove, and a third annular groove. The first and third annular grooves are disposed on the inner wall of the fixed sleeve, the second annular groove is disposed between the first and third annular grooves, and the second annular groove is disposed on the outer circumferential surface of the guide sleeve, with the indexing hole disposed within the second annular groove. Preferably, the first annular groove communicates with the oil inlet passage 55.

[0066] Furthermore, in order to prevent the lubricating oil from leaking from the connection between the guide sleeve 3 and the fixed sleeve 4, as one implementation method, a sealing member 56 is provided between the guide sleeve 3 and the fixed sleeve 4 in the embodiment of the present invention.

[0067] Furthermore, in order to prevent the drill bit 1 from axially moving during the machining of the powder discharge groove, as one of the preferred embodiments, the powder discharge groove machining tool in the embodiment of the present invention further includes an end cover 61 and a tip 62, wherein the end cover 61 is fixedly connected to the guide sleeve 3, and the tip 62 is arranged on the end cover 61, and the outer surface of the front end of the tip 62 is in contact with the inner surface of the central airway of the mounting rod 12. When the slag discharge groove is machined by a milling machine, the mounting rod 12 of the drill bit 1 may move axially or radially. In order to center the drill bit 1, the impactor is clamped by the jaw group 21, and the rear end of the mounting rod 12 is centered by the top assembly to prevent the drill bit 1 from moving.

[0068] Furthermore, as one embodiment, the powder discharge trough processing tool in the embodiment of the present invention further includes a connecting member 71 and a force rod 72, wherein the connecting member 71 is arranged at the end of the fixed sleeve 4 away from the chuck 2, the connecting member 71 is sleeved on the outside of the guide sleeve 3, and the connecting member 71 is fixedly connected to the guide sleeve 3; the force rod 72 is arranged on the outside of the connecting member 71 and connected to the connecting member 71. The force rod 72 applies a torque to the connecting member 71 to drive the guide sleeve 3, the drill bit 1 and the chuck 2 to rotate until the positioning rod 52 is inserted into the indexing hole 31.

[0069] Furthermore, as one of the embodiments, the guide sleeve 3 in the embodiment of the utility model includes: a first section 32, a second section 33 and a third section 34 connected in sequence along the direction from the chuck 2 to the end cover 61, wherein the first section 32 is fixedly connected to the chuck 2, the second section 33 is used in conjunction with the fixed sleeve 4, and the third section 34 is used in conjunction with the connecting member 71, and the outer diameters of the first section 32, the second section 33 and the third section 34 are gradually reduced, wherein the second section 33 is specifically a conical structure, and the outer surface of the third section 34 is provided with a threaded line, and the third section 34 is fixedly connected to the connecting member 71 by a thread.

[0070] Specifically, the connecting member 71 and the third section 34 in the embodiment of the present invention are connected by threads, threaded holes are provided along the radial direction of the connecting member 71, and the outer surface of the force rod 72 is provided with external threads used in conjunction with the threaded holes.

[0071] Furthermore, as one embodiment, the end cap 61 in the embodiment of the present invention is disposed on the side of the connector 71 away from the fixed sleeve 4, and is fixedly connected to the guide sleeve 3. A threaded mounting hole is provided in the end cap 61, through which the tip 62 passes, and a tapered positioning surface is provided at the front end of the tip 62 for use with the central air passage of the mounting rod 12. An adjusting nut 63 is disposed on the side of the end cap 61 away from the connector 71, and is threadedly connected to the tip 62. The axial position of the tip 62 is adjusted by rotating the adjusting thread, and the tip 62 is centrally positioned relative to the mounting rod 12 via the tapered positioning surface.

[0072] Furthermore, the end cover 61 and the guide sleeve 3 in the embodiment of the present invention are fixedly connected by screws.

[0073] Furthermore, as one of the implementation modes, the powder discharge trough processing tooling in the embodiment of the present utility model further includes a base 8 , which is arranged below the fixing sleeve 4 , and the base 8 is fixedly connected to the fixing sleeve 4 .

[0074] Furthermore, the base 8 in the embodiment of the present invention is provided with an air-avoiding groove 9 used in conjunction with the force-adding rod 72 to avoid interference between the force-adding rod 72 and the base 8 during rotation.

[0075] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A powder discharge trough processing tool, characterized in that: include: A chuck (2) is mounted on the outside of a mounting rod of a drill bit (1), wherein a front end of the chuck (2) is provided with a jaw group (21), and the jaw group (21) is used to clamp the impact portion of the drill bit (1); A guide sleeve (3) is sleeved on the outside of the mounting rod and fixedly connected to the chuck (2), wherein the outer circumferential surface of the guide sleeve (3) is provided with indexing holes (31) at intervals, and the indexing holes (31) are used to be arranged in a one-to-one correspondence with the powder discharge slots; A fixed sleeve (4) rotatably sleeved on the outside of the guide sleeve (3); A positioning assembly (5) is provided in the fixing sleeve (4), and the positioning assembly (5) is used in conjunction with the indexing hole (31) to fix the guide sleeve (3) and the fixing sleeve (4).

2. The powder discharge trough processing tooling according to claim 1, characterized in that: The positioning component (5) comprises: A mounting hole is provided on the fixing sleeve (4), the mounting hole extending in the radial direction of the fixing sleeve (4); A spring sleeve (51) is sleeved in the mounting hole and fixedly connected to the fixing sleeve (4); A positioning rod (52) is sleeved in the spring sleeve (51), and a positioning head is provided at the bottom of the positioning rod (52), and the surface of the positioning head that cooperates with the indexing hole (31) is specifically an arc surface; An elastic member (53) extends along the axial direction of the mounting hole, and two ends of the elastic member (53) are respectively connected to the spring sleeve (51) and the positioning rod (52).

3. The powder discharge trough processing tooling according to claim 2, characterized in that: The outer circumferential surface of the guide sleeve (3) is specifically a conical structure. In the direction from the chuck (2) to the guide sleeve (3), the outer diameter of the guide sleeve (3) gradually decreases, and the inner diameter of the fixed sleeve (4) and the guide sleeve (3) that cooperate with each other gradually decreases.

4. The powder discharge trough processing tooling according to claim 2, characterized in that: The positioning component (5) further includes: An oil groove (54) provided between the mating surfaces of the fixed sleeve (4) and the guide sleeve (3); An oil inlet channel (55) is provided on the fixed sleeve (4) and is used to communicate with the oil groove (54). An oil inlet is provided on the outer surface of the fixed sleeve (4), and the oil inlet is communicated with the oil inlet channel (55).

5. The powder discharge trough processing tool according to any one of claims 1 to 4, characterized in that: Also includes: an end cap (61) fixedly connected to the guide sleeve (3); A tip (62) is provided in the end cover (61), and the outer surface of the front end of the tip (62) is in contact with the inner surface of the central air passage of the mounting rod, so as to position the drill bit (1) in the axial direction.

6. The powder discharge trough processing tool according to claim 5, characterized in that: Also includes: a connecting piece (71) provided at one end of the fixing sleeve (4) away from the chuck (2), the connecting piece (71) being sleeved on the outside of the guide sleeve (3), and the connecting piece (71) being fixedly connected to the guide sleeve (3); A force-adding rod (72) is provided on the outside of the connecting member (71) and is connected to the connecting member (71).

7. The powder discharge trough processing tool according to claim 6, characterized in that: The guide sleeve (3) comprises: A first section (32), a second section (33), and a third section (34) are sequentially connected along a direction from the chuck (2) to the end cover (61), wherein the first section (32) is fixedly connected to the chuck (2), the second section (33) is used in conjunction with the fixing sleeve (4), and the third section (34) is used in conjunction with the connecting member (71).

8. The powder discharge trough processing tool according to claim 7, characterized in that: The connecting piece (71) and the third section (34) are connected via threads, a threaded hole is provided along the radial direction of the connecting piece (71), and an external thread line for use with the threaded hole is provided on the outer surface of the force rod (72).

9. The powder discharge trough processing tool according to claim 8, characterized in that: The end cover (61) is arranged on a side of the connecting member (71) away from the fixed sleeve (4), and the end cover (61) is fixedly connected to the guide sleeve (3); A threaded mounting hole is provided in the end cover (61), the tip (62) passes through the threaded mounting hole, and a conical positioning surface for cooperating with the central airway of the mounting rod is provided at the front end of the tip (62); An adjusting nut (63) is provided on a side of the end cover (61) away from the connecting member (71), and the adjusting nut (63) is threadedly connected to the top (62).

10. The powder discharge trough processing tool according to any one of claims 1 to 4 and 6 to 9, characterized in that: Also includes: A base (8) is provided below the fixing sleeve (4) and is fixedly connected to the fixing sleeve (4).

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